Door-spring.



.PATENTBD APR. 2, 1907.

E. J. WELLS. DOOR SPRING.

APPLIOATION FILED AUG. 30.11906.

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WITNESSES: 6 7% A TTORNE Y UNITED srarns PATENT, OFFIOE.

ELMERJ. WELLS, OF NASHUA, IOWA, OR OF ON E-HALF TO GEORGE F. SOHLUTZ, OFSALT LAKE CITY, UTAH.

DOOR-SPRING.

Specification of Letters Patent.

Patented April 2, 1907.

Application filed August 30, 1906. Serial No. 332.667.

To all whom, it may concern:

Be it known that I, ELMER J. VVELLs, a citizen of the United States ofAmerica, and a resident of Nashua, Chickasaw county, Iowa, have inventedcertain new and useful Improvements in Door-Springs, of which thefollowing is a specification.

My invention' relates to door-springs; and the object of m yinvention isto provide a door-closing device having springs so arranged that theycannot bind against the edge of the door and will always exercise astraight pull and constant tension upon the door.

This object I have accomplished by the means which are hereinafterdescribed and claimed and which are illustrated in the accompanyingdrawings, in which- Figure 1 is a horizontal section of a portion of adoor and its casing, showing in the full lines my improved closingdevice in the position it assumes when the door is closed and by thedotted lines the relative positions of the springs and other parts ofthe device when the door is open; and Fig. 2 is a detail view and sideelevation of the intermediate lever connection.

Similar letters refer to similar parts throughout the several views.

The door a is swung from its casing-plate c by means of hingeconnections 6 in the usual manner. The screw-eyes e andf are fixed tothe door a in the same horizontal line and at proper distances from theedge thereof. The screw-eye g is affixed to the inner side of thedoor-casing d near its outer corner. m is a lever connection having itsinner endfpivoted in the eye of the screw-eye 8, while its outer end isprovided with the eyes n and 0. A coiled spring is isconnected betweenthe screw-eye g and the ,eyelet 0 of the lever m, while a longer coiledspring h is connected between the screw-eye e and the eyelet n of thesame lever m.

WVhen the door a is thrown open to the position shown by the dottedlines in Fig. 1, the lever m and the springs h and 7c slightly shifttheir relative positions; but it will be seen that at all times duringthe change of position of said parts the tension upon both springs isalways direct and that there is no possibility of either spring bindingagainst any part of the door or its casing.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. The combination with a door-casing and a door hinged thereto oftension-springs connected respectively to said casing and door, and aspacing-lever pivoted to said door and connected to the inner ends ofsaid springs. 4 I

2. The combination with a door-casing and a door hinged thereto, ofcoiled springs connected respectively to said casing and said door, anda spacing-lever having one end pivoted to said door and its other endsupplied with eyelets, the inner end of each spring connected .to aseparate eyelet.

Signed at Richardton, North Dakota, this 11th day of August, 1906.

ELMER J. WELLS.

Witnesses:

FRED KoEsEL, AUGUST KoEsEL.

